Download of Whoopee 1.2 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application lies within System Tools, more precisely Backup & Restore. We recommend checking the downloaded files with any free antivirus. This free software for Mac OS X is a product of LHSG Inc.
From the developer:
Whoopee offers an easy way to transfer, back up, and share your photos and videos between mobile phones, tablets, and computers. Your photos, videos, and documents never leave your local network, nor they go over the Internet, keeping your photos, videos, music, and other files safe. You can securely send files between your OSX devices and iOS devices (even across platforms) without cables or any cloud server.
You may want to check out more software for Mac, such as FILERECOVERY for Mac, Synchronize! X Plus or Folder Backup, which might be similar to Whoopee.